Adding-machine.



No. 702,052. Patented lune I0, 1902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.) (No Model.) 7 Sheets-Sheei l.

M/ITNESEEEi INVENTEIR',

76 76 &;4 vac/.4 wwwm 2.1mm

j-HE ATTEIR'NEY.

No. 702,052. Patented June I0, I902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.) (No Model.) 7 Sheets-Sheet 2,

WWT EEEEE |N\/ENITUR',

. n'ww E 45 ATTUR'NEY.

No. 702,052. Patented lune l0, I902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.) (No Model.) 7 Sheets-$heet 3.

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Patented June 10, I902.

7 Sheets-Sheet 4 TTDIQNEY 0.. WASH m5 Q Q mus rams m, PumEu m E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.)

(No Model.)

WITNESSEE? zgm.

No. 702,052. Patented lune l0, I902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.)

% (No Model.) 1 SheetsSheet 5 WITNEEEEE 1rs INVENTUR.

76 I by JMJMI i -h5 ATTORNEY.

E. FiTCH.

ADDING MACHINE.

(Applicatio n filed Nov. 28, 1898.)

Patented June I0, [902.

7 SheetsSheet 6.

(No Model.)

INVENTEIR WITNESSES 1 k l5 ATTORNEY No. 702,052 Patentod m ne 10, 1902.

E. rncu.

ADDING MACHINE.

Application filed Nov. 28, 1898.)

(No Model.) 1 Sheets$heet 7.

llllllllh \A/ITNEESEE:

HIE ATTEIRNEY.

I UNITED STATES PATENT OFFICE.

EUGENEFITCH, OF ASTORIA, NElV YORK, ASSIGNOR TO THE UNION TYPE- WVRITERCOMPANY, OF JERSEY CITY, NEWV JERSEY, A CORPORATION OF NEW JERSEY.

ADDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 702,052, dated June 10,1902.

Application filed November 28, 1898. erial No. 697,613. (No model.)

To all whom-it may concern:

Be it known that I, EUGENE FITCH, a citizen of the United States, and aresident of Astoria, in the borough of Queens, city of New York,

in the county'of Queens and State of New York, have invented certain newand useful Improvements in Type-Writing and Adding Machines, of whichthe following is a specification. I

The present invention relates, primarily, to a combined adding andtype-writing machine, one object of the invention being to provide amachine capable of being used for ordinary type-writing work, as writingwords and sen- I5 tences, and by a simple adjustment of being renderedcapable of doing such work and of registering and adding numbers.

Another object is in adding and recording the numbers added, to correcterrors and defective records without operating the adding mechanism.Another object is to record the sum of an addition without disturbingthe adding mechanism.

Another object is to provide a means for quickly and accurately writinglike denominations under, each other in column.

Another object is to automatically space characters in the units-placeand in the tenths- 0 place at a greater distance apart than the usualregular spacing of the Arabian numerals would give.

Another object is in a combined type-writer and adder in which part ofthe adding mech- 3 5 anism is movable relatively to the rest of suchmechanism and in which such relatively movable part is out of engagementwith the rest during a part of the forward traverse of the type-writercarriage and is automatically connected with said carriage at a givenpoint or time and is thereafter controlled in its stepby-step movementby said carriage to relieve the driving mechanism or spring of thetype-writer carriage from the additional work of moving such movableadding-mechanism element whether it be the adding-wheels or a part ofthe driving mechanism for operating or turning such wheels.

Another object is in a combined typewriter and adder in which there aretwo carriages, one of which has a part of the adding mechanism mountedthereon and in which the said ad ding-mechanism carriage is spring (orweight) driven, to automatically throw or bring said driving mechanisminto operation when the type-Writer carriage reaches a given point inits forward traverse.

Another object is to operate an adding mechanism by power other thanthat derived from the strokes or movements of the hand in selectingnumbers in the operation of add- Another object is in a combinedtype-writer and adding mechanism to operate the addingwheels (orequivalent) by a spring-driven escapement-controlled mechanism, and asan adjunct thereto to rewind or reset the said spring (or weight)automatically during the operation of the type-Writer.

Another objectisin acombined type-writer and adder in which the addingmechanism can be rendered inoperative, so as to permit of the use of themachine for ordinary typewriting work, to provide that the chance ofaccidental engagement and disengagement of the two mechanisms shall bereduced to a minimum, and other objects,-as will herein after more fullyappear.

To these ends the invention includes features of construction andcombinations of devices hereinafter described, and more particularlypointed out in the claims concluding this specification.

The preferred form of the invention is illustrated in the accompanyingdrawings, forming part of this specification, in which* Figure 1 is afront elevation of the machine. Fig. 2 is a plan view thereof. Fig. 3 isa central vertical longitudinal or front to back sectional view. Fig. 4is a side elevation from the left of the machine, certain parts of thecasing being omitted or broken away to more clearly show the mechanism.Fig. 5 is a plan View of the adding mechanism and operating parts. Figs.6, 7, 8, 9,10, 11, and 12 are views of different parts of the mechanismfor operating the adding mechanism. Fig. 13 is a perspective view of anumber-wheel and operating-gears therefor. Fig. 14 is a detailperspective View of a part of the mechanism intermediate the carriage ofa type-writing machine and a carriage of an adding mechanism. Fig. 15 isa similar view of the other end and side of lock and release platepartially shown in Fig. 14. Fig. 16 is a detail view showing theposition of the parts in which the adding-mechanism carriage may beconnected to or disconnected from the earriage of thetype-writingmachine. Fig. 17 is a side view of a modified rack formingpart of a carriage-feed mechanism. Fig. 18 is a detail view. Fig. 19 isa perspective view of the escapement mechanism for the addingwheels.Fig. 20 is a rear elevation of the machine, some parts being omitted andothers broken away.

The same part in the drawings will he referred to by the same numeral orcharacter of reference.

The particular type-writing mechanism, carriage-feed mechanism, andpaper-feed mechanism illustrated in the drawings form the subject-matterof a companion application for Letters Patent filed November 26, 1898,and serially numbered 697,505, and need not be particularly describedherein, except in so far as the same are connected with thesubject-matter of the present invention.

The working or moving parts of the various mechanisms shown in thedrawings are supported by suitable framework composed of a bottom frame1, a plate 2,'posts 3, uniting the frame and plate, standards 4-, rails5, strut 6, and various. brackets and other parts, as will hereinaftermore fully appear.

The carriage of the typewriter illustrated comprises upright end pieces'7, united by bars 8, Figs. 3 and 20, and is provided withantifriction-rollers 9, which coaet with the guide-rails 5. Theplaten-carrier comprises end pieces 10, which are united by tie-rods 11.The uprights 7 are provided with forwardly-extending arms 12, perforatedvertically to form guides for the rods 13, which are secured to the rods11 by plates 14 and screws. The platen 15 is suitably journaled in theend pieces 10 and is provided with suitable line-feed and paper-holdingdevices.

The paper-carriage is provided with ordinary fiXed and movable pawls 16,Fig. 3, which coact with the rocking rack-bar 17. The rack-bar issupported by arms 18, which are pivoted at 19 to brackets or standards20, rising from the plate 2. The universal bar 21 is carried at thefront end of said levers 18 and overlies the key-levers 22. Thekeylevers 22 are pivoted at 23 on knife-edged pins, and the rear ends ofsuch key-levers are held down by means of springs 24, bearing on thelevers and attached to the said plate 2 by the said knife-edged pins.The jointed type-bars are pivoted upon a shaft 26 and coact with theplaten and key-levers in a manner hereinafter described.

Considered purely with relation toits func tion as an adding mechanismthe preferred form of myinvention includes a series ofindependently-operable number-carriers, said parts being supported by asuitable frame, and in conjunction therewith a spring or power drivendriver for operating said number-carriers one at a time, the said frameand the parts supported thereby or the said driver having motion oftranslation, whereby the driver and the said independently-operablecarriers are caused to be operatively engaged, as described, and akey-controlled escapement which controls the rotatory motion of saiddriver. I prefer that the variable throw of the driver for operatingsaid nu mber-carriers to move them different distances, according to theamount they are to be turned or otherwise moved, shall be secured byavariable throw in the escapement itself.

In the preferred form of the adding mechanism (that shown inthedrawings) thenumher-wheels are placed side by side and areindependently rotatable. These wheels are supported in a carriage whichis adapted to move to and fro in a direction parallel to the directionof motion of the carriage of the type-writing mechanism when the addingmechanism is used in conjunction with atypewriter. The adding-wheels areindependently rotated one by one, except in the operation of carrying,at which time one wheel turns one or more wheels of higher denominationand are carried in succession from right to left into and out ofposition to be turned by a rotatoryor other driver supported upon thefixed framework of the machine. Inasmuch as the type-writing proceedsfrom the left to the right and numbers are read from left to right, thedirection of motion of the carriage of the adding mechanism in thepreferred form of the invention is from right to left, and theadding-wheels are arranged with the highestdenomination. at the leftandthe lowest at the right.

Each number-wheel 27 (see Fig. 13) is provided on its periphery with thenine digits and the naught arranged in order at equal distances apartand is provided with a cogwheel or gear 28, secured thereto at one sidethereof. At the other side each wheel 27 (except the hundredths orlowest wheel) is provided with a toothed carrying wheel or gear 29, alsofixed thereto. Each number-wheel, with its gear 28 and carrying-gear 29,is perforated axially to fit upon a shaft 30, whose ends are secured inthe end pieces 31 32 of the carriage of the adding mechanism, Figs. tand 5. The end pieces 31 232 are secured together by means of the shaft30, ashaft a bar 3%, Fig. 3, and a bottom plate 35, or by other suitablemeans, and are provided with antifriction-rollers 36, which coact withthe guide-rods 37, secured to the frame 1. The

number-wheels from units up to millions are placed side by side and alsothe tenths and hundredths wheels; but the units-wheel and thetenths-wheel are separated from each other a small distance, as shown inFig. 1.

thereto at 40, said pawl being in the plane of or adapted to coact withthe carrying-pinion 29 of the number-wheel of the next higherdenomination. Each pawl 39 is provided Wit-hacurved extension 41,extending beyond the center of the pinion 38 and coacting with the shaft33 as a stop for limiting the rotation of the pawl in one direction uponits axis 40. Springs 42, secured to the face of the pinions 38 by screws43, bear at their free ends upon the said extensions 41 and press saidends against the said shaft 33. Each number-wheel 27 is held againstaccidental rotation by a suitable detent 44, Fig. 3, at the end of aflat spring, which spring is socured to a bar 45, connecting the endpieces 31 32 aforesaid, said detents engaging with the teeth of thepinions 28 or 29. The V- shaped detent shown permits of the rotation ofthe number-wheel in either direction by the application of suitableforce.

Mechanism by which the pinions 38 and their corresponding number-wheelsmay be driven will next be described.

One of the cross-bars 1 of the frame 1 is provided with uprights orstandards 46, Fig. 5, to the tops of which a plate 47 is secured byscrews 48. A bracket 49 extends forward and downward from the top of theplate 47, near one end thereof, and a bracket 50 extends rearwardly fromthe frame 1, near the left-hand front corner thereof, said brackets 4950 being provided with suitable bearings in line with each other for ashaft 51, which is journaled therein and is held against endwise motionby collars 52 53, secured thereto as by set-screws. The rotatory shaft51 is provided with a pinion 54, fast thereto and adapted to mesh withthe pinions 38 as these are moved to and fro by the carriage of theadding mechanism. The shaft 51 is provided with a fusee 55, which isheld against endwise motion by a collar 56 and a disk 57, the latterbeing integral with the collar 53 aforesaid. Between the fusee 55 properand the disk 57 is a cylindrical portion 58, integral with the fusee orrigidly attached thereto, and a ratchet-wheel 59, fast to the saidcylinder or barrel 58. The disk 57 is provided with a pivoted pawl 60,Figs. 5 and 18, which is pressed into contact with the ratchet 59 by aspring 61, secured to the disk and bearing on said pawl. The aforesaidpawl and ratchet permit of the rotation of the fusee and barrel in onedirection independently of the shaft 51. A cord 62 has one end securedto the fusee, and the other end of said cord is secured at 63 toagrooved disk 64, which'is journaled at 65 on an arm of the saidframe 1. The disk 64 is provided with a barrel around which a cord66 iswound. Said cord 66 is fast at one end at 67 to the disk 64 and theother end thereof is fast to one end of the helical spring 68, whoseother end engages with a pin 69 on the frame 1. The tension of the contract-ile spring 68 tends to rotate the disk 64 and to unwind the cord62 from the fusee 55, the pull of the cord 62, acting through thebacking-ratchet 59 60, tending to rotate the shaft 51 and pinion 54. Theshaft 51 is providedwith two ratchetwheels 70, fast thereon, Figs. 10,11, and 19, and a swinging detent-bar 71 coacts with said ratchet-wheelsto prevent the rotation of the shaft 51 in the described directionexcept whenreleased,ashereinafterdescribed. The detent-bar 71 is fixedto and carried by two arms 72, Fig. 9, pivoted at 73 on a shaft or rod74, Fig. 19, which is supported in brackets 75, rising from the top ofthe fixed plate 47 aforesaid. A spring 76, fast at one end to the underside of the said plate 47, bears against the under side of the said bar71 and normally maintains the said bar in its working or holdingposition, as shown in Fig. 3. The bar 71 forms the holding-dog of anescapement mechanism composed of said bar, ratchet-wheels 70, slidingratchet-bars 77, and stops,hereinafterdescribed. The saidratchetbars 77are attached to or are integral with cross-bars 78, the whole forming arigid rectangular frame. (See Fig. 7.) The bars 77 are provided withgrooves 79, which embrace the edges of a carrier, as plate 80, Figs. 6and 19, on which the said frame may slide. The carrier-plate 80 isprovided with arms 81, by means of which it is pivoted=upon the rod 74aforesaid. Between the arms 72 and the arms 81 arms 82 are placed andare independently pivoted upon the same bar or shaft 74. At theirforward ends the arms 82 are united bya rod 83. The arms 82 rest uponpins or studs 84 in the arms 72, and the ratchet-bars 77 are providedwith pins 85, which bear upon the tops of the arms 82. It will thus beseen that the force of the spring 76 is exerted in holding the detent 71against the ratchet-wheel and also in maintaining the arms 82, plate 80,and sliding ratchet-bars in their elevated or upper positions. Thesliding ratchet-bars 77 are held in one extreme of their motionto wit,against the stops 86 on the arms 81- by means of a spring 87 and cord88, Figs. 5 and 19, one end of the spring being fast to the frame 1 or apin on plate 47 and one end of the cord being fast to a hook or eye 89on one of the ratchet-bars 77. For convenience the cord 88 passes abouta pulley 90, journaled on the plate 47.

From the described construction it will be seen that upon the depressionof the plate 80 the ratchet-bars 77 which are normally out of mesh withthe ratchet-wheels 70, will be IIO carried down into mesh with saidratchetwheels and that at the same time the holdingdogs or bar '71 willbe moved out of engagement with the said ratchet-wheels through themedium of the pins 85, arms 82, pins 84, and arms 72, whereupon theshaft 51 and pinion 54 will be rotated by means of the spring 68 and theconnections intermediate said spring and said shaft 51 until arrested insome manner.

Means whereby the amount of rotation of the shaft 51 and pinion 5-1: isvaried or regulated will next be described.

By reference to Fig. 2 it will be seen that certain of the keys 91 areprovided with the nine digits and the naught. Each of the correspondingkey-levers 22, except that of the lever corresponding to the naught, isconnected, by means of a strap or link 92, with the rearend of acorresponding lever 93, Figs. 3, 15, and 19, the said straps 92 passingthrough a suitable slot in the plate 2. The levers 93 are pivoted uponthe rod 7+1 aforesaid, and at their forward ends said levers 93 overliethe rod 83. The levers 93 are provided each with a downward extension orlug 94:, and these lugs 91 of the entire series of levers 93 are setback from the forward ends of the said levers 93 by regularly-increasingdistances, as indicated in Fig. 12-that is to say, the said series ofextensions 91. are in a line extending obliquely across the machine. Theplate 80 is slotted obliquely at 95 to permit the said extensions 94: topass therethrough, though the said extensions 91 do not normally extendbelow the plate 80. The front ends of levers slant up on their undersides, so as to be depressible without touching the plate'SO.

Upon operating or depressing any of the digit-bearing keys 91 theforward end of the corresponding lever 93 is depressed and carries downwith it the rod 83, arms 82, arms '72, and bar 71. At the same time theplate 80 and ratchet-bars supported thereby fall of their own weight andthe ratchet-bars mesh with the ratchet-wheels 70. The motion of theforward ends of the levers 93 about the axis '74: is greater than thesimilar motion of the plate 80, whence it results that the extension91't of the depressed lever 93 is carried below the lower surface of theplate 80 and into the path of the rear cross-bar 7S afore said and stopsthe forward motion of the ratchet-bar 79, and so stops the motion ofrotation of the shaft 51 and pinion 54. By reason of the obliquearrangement of the said extensions 9t the said forward motion or throwof the ratehet-bars 77 is stopped at different distances from theinitial position of such bars, according to whichever digit-carrying key91 may be depressedthat is to say, the extension or stop 91-corresponding to the 1 key permits the ratchet-bars to move forward acertain unit of space, the stop 94: corresponding to the 2 key permitsthe said ratchet-bars to be moved forward two of such units of space,and so on for the remainder of the digit-keys, thus controlling orregulating the rotation of the pinion 5i. On the release of thedepressed digitkey the spring 76 returns the dog '71 and other parts ofthe escapement mechanism to the positions shown in Fig.

As shown in Fig. 5 ofthe drawings,the pinion 51- is not in mesh with anyof the pinions E) This is the normal position of the parts during thegreater extent of the motion of the carriage of the type-writingmachine. As will be explained more at large hereinafter, the carriage ofthe adding mechanism may be put in motion toward the left at apredetermined point in the traverse of the paperearriage toward theleft. When the carriage of the adding mechanism is so put in motion, thefirst or left-hand pinion 38 is moved into mesh with the pinion 54-, andthereafter the remaining pinions 38 come into mesh in succession withthe said pinion 51 and the previously-engaged pinion moves out of meshas the adding-mechanism carriage moves to the left. As shown in thedrawings, each typebar is provided with three type and the machine isprovided with two shift-keys, rspectively marked Fig and Gap, for depressing and raising the platen-carrier, and also the keys carrying thedigits are provided with letters to indicate the corresponding type.Inasmuch as the operation of any of these digit-keys during the ordinarytypewriting will operate the levers 93 and so permit the spring 63 torotate the pinion 54: it n'iight soon result that the spring (58 wouldrun down before any pinion 38 is brought into mesh with the pinion 5 L.1 have therefore provided a device for maintaining the spring (38 undertension sufficient to meet the maximum demands thereon during theprocess of operating the adding-wheels, and such device will now bedescribed.

A spring-setting cord 96, Fig. 5, has one end secured to the barrel5S,before mentioned, and is led therefrom in such wise that it is woundaround said barrel as the cord (32 unwinds from the fusee 55. As shownin the drawings, the cord 96 passes under a pulley 97 (the cord 62passes over such pulley) and around a second pulley 98, both pulleysbeing on the frame 1 orother part of the framework of the machine, andthe other endof the cord 96 is fast to a pulley 99, Fig. 3, fast upon ashaft 100, journaled in a bearing in block 101. The block 101 isattached to and is moved with the paper-carriage, as by rods 102,connecting the block 101 with the bar 8 of the carriage. The shaft 100is connected with the block 101 by means of a spiral or clock spring103, one end of this spring being fast to the shaft and the other endbeing fast to a pin lixed to and projecting from the block 101. Thespring 103 is so placed that its force is exerted to wind up the cord 90on the pulley 99 as the paper-carriage moves from right to left, thustaking up any slack in the that after the paper-carriage has reached apredetermined point in its return motion from left to right the cord iswholly unwound from the pulley 99, and the further motion of thecarriage to the right causes the cord 96 to rotate the barrel 58, thusunwinding the cord 96 therefrom and rotating the fusee 55 to cause it towind up the cord 62 and through the described connections to put thespring 68 under tension. Upon the feeding forward of the papencarriageto the left the spring 103 takes up the slack of the cord 96automatically, and the spring 68 does not rotate the shaft 51 except atsuch times as one of the digit-carrying keys 91 is depressed. If one ofsuch keys is depressed, the wheel 54 is rotated a correspondingdistance,as above described.

In so far as certain of the objects of my invention are concerned it isnot material whether the driver 54 be relatively stationary and theadding-wheels be carried by and be movable to andfro with theadding-mechanism carriage or whether the arrangement be reversed, nor isit material in all cases that the adding-mechanism carriage be governedin its forward motion by the type-writer carriage in its forward motion.It is enough that the driven addingmechanism carriage move in astep-by-step mannersimultaneously or otherwise With the type-writercarriage and that it begin such motion when the latter carriage reachesa predetermined point in its forward traverse. I prefer, however, togovern the step-by-step motion of the adding-mechanism carriage from orby the typewritercarriage rather than to govern it by an independentmechanism, as requiring a less complicated mechanism.

The mechanism shown in the drawin, s, whereby the carriage of the addingmechanism is started automatically at a predetermined point in theforward traverse of the paper-carriage and is thereafter moved in astep-bystep manner, will next be described.

The bar 34 of the carriage of the adding mechanism is provided with widerack-teeth 104, Figs. 3 and 5, on the under side thereof. A pinion 105,fast on the shaft 106, meshes continuouslywith said rack-teeth 104. Theshaft 106 is journaled in bearings 107 108 on the frame 1 and is capableof a limited endwise motion in said bearings, such motion not beingsufficient to take the pinion 105 out of mesh with the said teeth 104.The shaft 106 has a second pinion 100 fast thereto at a point adjacentto the path of the block 101. The end of shaft 106 outside the pinion109 is provided with a flat-faced lock-block 110, Figs. 14, 16, and 20,shown in the drawings as substantially half of a cylinder. The block 101has a bar 111 attached thereto, said bar being parallel with the line ofmotion .of the papercarriage and being in the form of an anglebarprovided at its right-hand end with rackteeth 112, said teeth being forcoaction with the pinion 100 whenever the said pinion is moved rearwardby shaft 106 from the position shown in Fig. 3, as will presentlyappear.

liar 111 is of a length equal to or greater than the length of thecarriage traverse, and the rack 112 is at the right-hand end part ofsaid bar 111. The downwardly-extending part of the angle-bar 111 isadapted to glide over the flat surface of block 110 during the progressof the paper-carriage, and so prevent any motion of rotation of theshaft 106. The said downwardly-extending part of bar 111 extends fromthe left-hand end thereof continuously toward the right and terminatesat 113 adjacent the point where the rack 112 begins, so that beginningfrom the said point 113, Fig. 14, the block 110 and shaft 106 arereleased and may be rotated. At its forward side the said bar 111 isprovided with a downwardly extending plate 114, which extends from theright-hand end of the bar 111 to a point 115, Fig. 15, near theleft-hand end of said bar 111. The function of the plate 114 is toprevent the endwise motion of shaft 106 except at such. time as thepaper-carriage is in its extreme right-hand position, at which time theshaft 106, with its attached pinions 105 and 100, may be moved rearwardfrom the position shown in Fig. 3 to bring the pinion 109 to the rear ofthe plate 114, and so into the path of the rack 112. As shown in Figs.3, 4, and 16, the block or lug 110 is long enough to engage under bar111 in both (endwise) positions of shaft 106; but it is obvious that theblock may be of a length sufflcient to cause such engagement only whenshaft 106 is moved into its rearward position. The shaft 106 when in theposition shown in Fig. 3 may be locked against rotation at all times bymeans of a pin 116 On the shaft and a slot 117 in the bracket 118,through which the shaft passes. The shaft 106 is provided with acircumferential groove 119, with which a pin 120 engages. The said pin120 is carried by an arm 121 of a shaft 122, Fig. 5, which is journaledin the bracket 11S and in a bracket 123, secured to the frame 1. Theshaft 122 is provided with an arm 124, adjacent to the bracket 123,which arm 124 extends upwardly through a slot in the plate 2 and forms ahandlever, Figs. 1, 2, and 4, by which the shaft 122 may be rocked, andso cause the shaft 106 to be moved endwise. As long as the shaft 106 andthe attached parts are in the positions shown in Figs. 3 and 4 theadding mechanism is in the position shown in Fig. 5. \Vheneverit isdesired to connect up the adding mechanism in order. that it may performits function, the papercarriage is moved to its extreme right-handposition against the tension of its propellingspring 125, Figs. 1 and20, and the lever 124 is pulled forward, thus moving the shaft 106 andits attached pinions rearwardly of the machine, and so moving the pinion109 into the path of the rack 112, as indicated in Fig.

IIC

1.4. This moves pin 116 clear of slot 117, and

so frees shaft to that extent as soon as the paper-carriage has movedfar enough to carry the pinion 100 beyond the point 115. The plate 114and the bar 111 prevent undue endwise motion of the shaft 106. When thepaper-carriage has reached a predetermined point in its traverse to theleft, the rack 112 comes into mesh with the pinion 100 and rotates thepinion and shaft. When the pin 116 is locked by the slot 117, the shaft106 cannot rotate, and hence the adding-wheel carriage cannot move so asto engage any of the pinions thereon with the common driver 54. Thus themachine may be used solely as a type-writing machine and figures maybewritten freely at all portions of the line of writing without affectingthe adding-wheels. In other words, the machine operates either as asimple type-writing machine or as a combined type-writing and addingmachine, according to the adjustment of the lever 12%. It will beperceived that it is not necessary when using the adding mechanism toadjust said lever 124: at the beginning of each line of writing, becauseafter said lever is once adjusted and the pin thereby drawn out of thelocking-slot the adding-wheel carriage becomes automatically coupled tothe papercarriage near the end of each line of writing and automaticallyuncoupled during each return stroke of the carriage. The function ofsaid lever is merely to move the shaft end wise far enough to withdrawthe pin from the locking-slot and simultaneously move the gear 100 intoline with the rack 112, so that the gear may be actuated by the rack atthe same portion of each reciprocation of the paper-carriage. Fig, 1-1shows the positions of the parts when the pinion 109 is in its rearwardposition, or in line with the rack 112, so that at the proper point ineach traverse of the bar 111 saidpinion may mesh with the rack, whoseteeth, it will be understood, are cut the full width of the squared endof the bar 111. It will be observed that the pin 110 has been movedclear of the slot 117, thus permitting the shaft 106 to be rotated. Thepinion 109 is by preference smaller than the pinion 105, and both saidpinions engage their corresponding racks at their own top sides, whenceit results that the carriage of the adding mechanism moves from right toleft during the movement from right to left of the rack 112, the bar111, and the papercarriage, to which said bar is secured, the movementof said carriage being produced by the spring 125, Fig. 20, hereinaftermentioned, and being controlled in the usual manner by theescapement-pawls 16, which are coinmonin type-Writing mechanism andwhich permit step-by-step advance movements of the carriage at thesuccessive operations of the type-keys. It is obvious, however, that ifthe rack 10-1 engaged the pinion underneath the same the carriage of theadding mechanism would be moved from left to right, or the same resultcould be obtained. by causing rack 11:? to mesh with the under side ofthe pinion 100, in which case the positions of the block and the bars111 and 111- should be inverted.

The long horizontal shaft 100, which drives the adding-wheel carriage,is formed in two sections, the adjoining ends of the sections beingrigidly connected by a coupling 126, Fig. 3, which is preferably formedin one piece and is secured to the shaft-sections by set-screws. Aportion of said coupling between its ends is enlarged at 127 to form adrum, upon which is wound a cord 128, one end of said cord being securedto the drum and the other end thereof being attached to a contractilehelical spring 131, Fig. 5. The function of this spring is to drive orassistin driving the shaft 106 and the adding-wheel carriage, which isgeared thereto, thus relieving the mainspring 125, which drives thepaper-carriage, to the end that the letterfeeding movements of thelatter shall not be rendered too sluggish when the adding-wheel carriageis coupled thereto. It will be understood that it is desirable not onlythat the movements of the paper-carriage shall be prompt, so as to avoidirregular crowding or overlapping of the type impressions, but also thatthe movements of the adding-wheel carriage shall be prompt, so that aconnection may be established between the common driver 5t and theadjoining pinion 38 before said driver is caused to rotate by thedepression of a type-l ey, since if said driver should be rotated duringa movement of the adding-wheel carriage and while the driver is notconnected with any pinion 38 no pinion would be actuated by said wheel,and hence a mistake would. occur in the adding operation. Except whenthe paper-carriage is coupled to the adding-wheel carriage said spring131 performs no function, and during the portion of the paper-carriagetravel at which the adding-wheel carriage is inactive I prefer that saidspring should exert no turning action upon the shaft 100, as it wouldcause undue friction between the locking-piece 110 and the cooperatinglocking-bar 111. \Vith this end in view I cut away a portion of thebarrel 127 in such a manner as to leave opposite flanges 129 and 130,between which the cord 128 is con fined, and the cut-away extending tothe axis of its drum, so that when the adding-wheel carriage is in itsnormal posi tion or at the extreme right-hand end of its travel the cord12S maypass inastraight line from the spring 131 and substantiallythrough the axis ofthe drum 19 7, so that said cord may normally pull ata dead-center, and hence exert practically no rotative influence uponthe shaft. As soon as the shaft becomes coupled to the carriage-rack 112said barrel is rotated, so that the cord is lifted and exerts a rotativeinfluence upon the shaft. The diameter of the gear 105, which engagesthe rack 101 on the wheel-carriage, is so great that less than an entirerevolution of the shaft is required for moving the carriage to the limitof its travel, and hence the cord 128 is not again brought to adead-center, but constantly exerts a d riving influence upon the shaftand carriage. It will be seen that the portion of the drum 127 aroundwhich the cord is wound is semicylindrical in form, the plane facethereof passing substantially through the ,axis of the drum. If desired,the spring 131 and cord 128 may be omitted, and thepaper-carriage-driving spring maybe given sufficient tension to driveboth the type-writer carriage and the adding-wheel carriage.

Type-writer operators occasionally strike a wrong key,and so cause theimpress of a wrong letter upon the paper on the platen. In such cases itis almost invariably true that the operator is aware of having struckthe wrong key as soon as the stroke is done and notes the place for thepurpose of makinga correction later on. If, however, the type-writingmechanism is being used with adding or registering mechanism, it is moreconvenient to make the correction at the time the wrong key is struck;but this involves a double correction-to wit, the erasure of the wrongcharacter from the paper and the setting back of the correspondingnumber-wheel (or wheels, it carrying occurs) to what it was before thewrong key was struck and then the subsequent striking of the right key,the type writer carriage being also moved back to get the right digit inthe right place. In this case the operator must move back the propernumber-wheel by a number equaling the digit erroneously imprinted. Forexample, assuming that the numbering-wheels are in the position shown inFig. 1to wit, all showing the naught-and that it is intended to writethe digit 9 in the units-place and that the 8 key has been struckinstead; this will cause a turning of the units-wheel to bring the 8into view in the slot 13-32, (it being assumed that the adding mechanismis connected with the paper-carriage and that the carriages are inproper position to have the pinion 54 into mesh with the pinion 38,which drivesthe unitsnumber-wheel.) To make the correction, theoperatorerases the 8 upon the paper on the platen and with a pencilpointor the like inserted between the teeth of apinion on the unitsnumber-wheel moves the said wheel backward to bring the naught into viewin the slot 132. Also the paper-carriage is to be set back one stop orspace, thus moving the adding-mechanism carriage backward by thepaper-space to bring the pinion 51 again into mesh with the pinion 38driving the units number wheel. Thereupon the proper key-to wit, the 9key-is struck, and the 9 imprinted upon the paper on the platen, and the9 upon the units-wheel of the adding mechanism is brought into view inthe slot 132. Alike method or operation is to be followed whatever maybe the number erroneously shown in the slot 132 by the adding mechanism,care being taken, of course, to

turn the number-wheel backward the proper distance. It is observed thatthe pivoted spring-pressed pawls 39 will yield at such times as thecarrying-wheels 29 pass by them should the pawls or any of them be inposition to engage with the said carrying-pinions.

In writing bills or statements or other matter containing a column ofnumbers and summing up by the adding mechanism the sumtotal of theamount written upon the paper on the platen is shown by thenumber-carriers through the slot 1252, Figs. 1 and 3, and when it isdesired to write this sum-total on the bill there are two ways in whichit may be insured that the adding-wheels will not be moved while theoperator reads the said sum therefrom and writes it upon thetype-writing machine. One way is to disengage the adding mechanism fromthe type -writing mechanism, so that the latter may be operated withoutoperating the former. This is done by disengaging pinion 109 from thegroove formed by the bar 111 and plate 111 that is, by moving the shaft106 into the position shown in Fig. 3 of the drawings. The second way toprevent the rotation of the number-wheels while writing the saidsummation is to lock the pinion 5-1 against rotation,whileleaving theadding-mechanism carriage and its operating mechanism in position to beoperated by the rack 112.: In this case the pinions 38 will pass by andintermesh with the pinion 5% without being turned thereby during thesaid operation of writing the summation. For the purpose of so lockingthe said pinion 54: I provide a movable detent 133, Fig. 5, which may bemoved into I and out of mesh with the teeth of the pinion 5i. As shownin the drawings, the said detent is carried by a sliding bar 13 1, whichhas a limited motion upon the plate 47 by means of slots in the bar 13&and screws 13G, passing through said slots and engaging the threadedholes in the plate 17. The bar 134: extends to the letthand side of themachine in position to be conveniently operated by hand. When the detent133 is in engagement with the pinion 54, the said pinion and its shaftare prevented from being rotatedin either direction, though the detent71 and ratchet'bars 77 are moved up and down whenever a digit-bearingkey is struck. The ratchet-wheels 70 do not move, however.

At Fig. 17 is illustrated diagrammatically a rack 17, which may, ifdesired, be substituted for the usual feeding-rack, as shown at Figs. 3and 1. In this figure a gap or interval 137 is shown between two of therackteeth, the gap being produced by cutting away an intermediate tooth.It will be understood that as a result of the extra space 137 thepaper-carriage will be caused to feed a double space instead of theordinary space, and it will also be understood that the adding-wheelcarriage is accordingly moved a double space, and accordingly a gap isleft between the units -whecl and the decimalwheels, as illustrated atFigs. 1 and 5. If no space were left in the rack 17 at 137, there wouldbe no jump of the carriage, but only the usual letterfeeding movementthereof, and accordingly there would be only the usual single-stepmovement of the addingwheel carriage, and hence the driver 5% wouldstand opposite the gap in the system of adding-wheels, so that if bymistake the operator should touch any figure-key, thus causing arotation of the driver 5%, none of the addingwheels would be affected,and hence an error would occur in the adding operation. The purpose ofleaving the gap 137 is therefore to provide against such an error and toinsure that after the pinion 38, which engages the units-wheel, is movedout of engagement with the driver 54, the first decimal-pinion 38 shallbe immediately moved into engagement with said driver. In thisconnection it will be observed at Fig. 5 that the tenscarrying pawl 39,which is mounted upon the tenths-pinion 38, is made of sufficient sizeto bridge the gap between the units and tenths numbering-wheels, so thattens may be carried from the tenths-wheel to the units-wheel at theproper time. In case a paper-carriage rack of uniform pitch is used careshould be taken to strike either the period-key or the usual space-keyafter writing a figure inthe units-column and before writing thesucceeding figure.

The carriage of the adding mechanism is provided with a pointer 138,Fig. 2, which coacts with the scale 139, attached to or formed on theplate 2. As shown, the pointer 138 is carried by a bar 140, which isconnected to the carriage of the adding mechanism by a post 141, Fig. 4,and screw 142, the post passing through a slot 1 13, Fig. 3, in the saidplate 2.

IVhenever the pointer 138 is opposite or over any one of the marks onthe scale 139, it shows that the pinion 38 for operating thenumber-wheel of the corresponding denomination is in engagement with thedriver 5%. Thus if the pointer be opposite the third mark to the rightof the decimal-point'indieating mark 14st on the scale 139 it indicatesthat the pinion 38 for operating the hundrednumber carrier is inengagement with the pinion 5-1 and will be operated. by saiddriverpinion should a digit-bearing key be struck, it being understood,of course, that the pinion 109 is in mesh with the rack 112 at suchtime.

Although in this case I show the adding wheels on the carriage of theadding mechanism and the driver 5 L on the frameworkthat is to say withthe former as having a to and-fro motion relatively to the driverit willbe understood that in as far as that feature of my invention relating toan independent power mechanism for driving for the carriage (andattached parts) of the adding mechanism and in so far as certain objectsof my invention are concerned the driver 5% may be made the so movablepart of the adding mechanism (being moved axially in such case) and theadding-wheels may remain in a relatively fixed position, as shown anddescribed in my application aforesaid.

It will be noted that the mechanism shown for connecting the type-writerand addingmechanism carriages includes a journaled shaft, which iscontinuously geared with one and is discontinuously geared with theother of said carriages. I do not limit myself to the instance shown,(one in which the typewriter carriage is the one discontinuously gearedto the shaft,) however, since my invention is in this respect broadenough to include the case w ierein the adding-mechanism carriage is theone discontinuously geared to the shaft.

In order to provide for quickly moving the typewritor-carriage forwardfrom any position to any other position, I provide a carriage-releasekey 145 on a lever 141;, Fig. 2, which is pivoted at 1-17 to a bracket148, rising from plate 2, and is held with key 145 elevated by a spring1 1-9. The rear end of lever 1&6 lies under the universal bar 21 andlifts the same to such an extent whenever key 1&5 is depressedsufficiently that the rack 17 is wholly disengaged from dogs 11; and thepaper-carriage is free to be moved forward by its spring 125 until itreaches the end of its traverse or is stopped by hand or automaticallyat some other point. The scale 139 and pointer 1238 indicate thepositions at which the carriages should be stopped.

The type-writing mechanism shown in the drawings comprises a series oftype-bars 25, each formed in two parts hinged together at 150, the lowerpart 151 being fulcrnmed upon the rod 26 above described and the upperpart 152 being provided with a type-block 153, having three typesthereon. The part 151 has a disk-shaped lower end, which is providedwith an open-ended slot to engage with the rod 26 and at the sideopposite the slot with a notch to engage the rounded end of thecorresponding key-lever 22, all as shown in Fig. 3. Each part 151 isprovided with a cam 151-, substantially in line with the pivot 150, fora purpose presently to appear. The parts 152 are bent outwardly from amedial line of the machine, as illustrated at Fig. 2, and rest in combs155 156, which are secured to a guardframe 157, extending around thetype-bars in theirnormal positions. Converging arms 158 are secured tothe guard 157 and serve to guide the parts 152 to a central guide 1.59,by means of which the type-bars are brought to the printing-point of theplaten 15. An inking-roller 1H0 lies in the path of the type on the barsat the guide 159 and imparts ink to the type when the latter strike iton their way to the printingpoint and push it aside. The roller 160 ispivoted in arms 1131, which are pivoted upon a vertical axis at 162. Aspring 1623 returns the roller to the position thereof shown in Fig. 2as soon as the type releases. During the return motion of the type-barsthe cams or guides 15!- of the bars ICC adjacent to that operated coactto force the part 152 of the bar operated to its normal position, theworking faces of cams 151 being inclined inwardly from each side of themachine, as shown in Fig. 2.

The platen-carrier 10 is provided with downwardly-extending arms or rods13, provided at their lower ends with rollers 161, which run upon a rod165. The latter is borne by arms 166, fast upon a rock-shaft167,suitably journaled in the framework of the machine. Springs 168, securedto the frame of the machine and having a limited motion, rest under theends of the shaft or rod 165 and hold the platen-carrier in a centralposition, in which the middle types of the blocks 153 will coact withthe platen. The shaft 167 is connected by an arm and a link 169 with aV-shaped shift key-lever 170, having two keys 171 and 172 thereon andpivoted at 173 to a bracket 174, rising from the top plate 2. By pushingthe key 171 'rearwardly of the machine the link 169 is drawn forward andthe shaft 167 is rocked, so as to lower arms 166 and rod 165 against thetension of the springs 168, thus permitting the platen-carrier 10 tomove downwardly into position to coact with the lowermost types on thetypeblocks 153. By depressing the key 172 to the limit of its motion thelink 169 is moved rearwardly, and the shaft 167 is rocked to lift thearms 166 and rod 165, and so lift the platen to position in which itcoacts with the upper types of the blocks 153.

The operation of the machineis as follows: A sheet of paper is insertedin the usual manner around the platen, and the paper-carriage is pushedto the right. This movement of the carriage sets the mainspring 125,Figs. 1 and 20. The capital shift-key 172, Fig. 4, is then depressed,swinging the lever 170 upon the pivot 177 and through the link 169rocking the shaft 167 and elevating the horizontal shifter-bar 165 andthe vertical rods 13, thus lifting the platen to the position forwriting capital letters. While the platen is in this position a type-key91 is depressed, so as to vibrate its lever 22, Fig. 3, and elevate therear end thereof, thus swinging the arm 151 upwardly about the fulcrum26 and carrying the type-bar 152 up, so that the capital type upon theblock 153 strikes the paper upon the platen. During this movement thebar 152 contacts with the edge of the deflector 158 and is therebyguided toward the printing-point. Justbeforestrikingtheplaten the typecontacts with the ink-roller 159 and receives a supply of ink therefrom,said roller being pushed aside by the type and swinging upon its pivot162. The transverse universal bar 21 is also raised by the ascendingrear end of the key-lever, thus causing the arms 18 to rock upon thepivots 19 and moving the feeding-rack 17 down out of engagement with theupper and into engagement with the lower feeding-dog 16, mounted uponthe carriage. Upon the relief of the type-key 91 from pressure thekey-lever 22 is restored to its original position by the spring 24, thetype-bar and the inking-roller also returning to their normal positions.At the same time the universal bar 21 descends and the rack 17 rises,the latter thus releasing the lower dog and rengaging the upper dog 16,whereby the carriage is permitted to advance under the tension of thespring 125 to a position for receiving the next type impression in theusual manner. The capital shift-key 172 is now released,thus permittingthe platen to descend to its normal central position. Then othertype-keys are operated in succession, the middle or lower-case typesupon the type-blocks striking the platen. When it is desired to printfigures, the rear shift-key 171 is pushed rearwardly, and through thelink 169 the shifterbar 165 is depressed, thus permitting the verticalrods 13 and the platen to descend, so that the lower or digit types uponthe typeblocks may strike the platen. When the key 171 is released, theplaten is lifted by a spring 168 to its normal central position. It willbe understood that by the successive type-key depressions the carriageis fed along step by step by the cooperation of the mainspring 125, thefeeding-dogs 16, and the rack 17. Then the line of writing is completed,the platen is given a slight rotation, so as to advance the paperthereon in line-space direction, and the carriage is pushed to the rightfor beginning a newline. The above-described operations may be continuedindefinitely without affecting the adding-wheels. When it is desired tobring the adding mechanism into play, the handle 12%, Figs. 1, 4:, and5, is pulled forwardly, thus rocking both the shaft 122 and itsdownwardly-projecting arm 121, and by means of the pin-and-slotengagement with the carriage-coupling shaft 106 the latter is slidrearwardly, so as to withdraw the pin 116 thereon from the locking-slot117, Fig. 3 and 1 1, and simultaneously move the pinion 109 into linewith the short rack 112, which is suspended from the lower portion ofthe paper-carriage. Care must be taken to see that the paper-carriage isat the extreme right-hand limit of its travel at the time that the lever124: is swung forwardly, because when the carriage is in this positionthe cut-away 115, Figs. 15 and 20, stands opposite the pinion 109, andhence the rearward movement of the latter is not obstructed, whereas atany other point in the travel of the paper-carriage the bar or plate 114would prevent the shifting of the pinion. It willbe seen that thismovement of the lever 12% puts the adding-wheel carriage-driving shaft106 into condition to be automatically coupled to the paper-carriagemechanism at the terminal portion of each line of writing-that is, theportion at which figures are to be written in column upon the paper. Thebar 1251, Figs. 1 and 5, is also drawn toward the left, therebywithdrawing the locking-tooth 133 and releasing the number-wheel rotator5-1:, so that the latter may be intermittently rotated by the spring 68when the figurekeys are manipulated. Having thus placed in condition foractivity both the mechanism for rotating the number-wheels and themechanism for coupling the latter to the paper-carriage, the type-keysmay be manipulated so as to write words or items at the left-handportion of the page or line in the manner already described. After suchwriting the paper-carriage is moved into position at the left forwriting in the column. This carriage movement may be produced, if desired, by pressing the releasekey 145, Fig. 2, thereby lifting theuniversal bar 21 and swinging the rack 17 down clear of both dogs 16, sothat the carriage is free to run rapidly to the left under the influenceof its driving-spring 125, said rack rengaging the dogs upon the returnof the release-key to normal position. During said movement of thecarriage the lock 110, Figs. 14 and 16, prevents rotation of the shaft106, which drives the adding- Wheel carriage, and hence the carriagestands idle. hen, however, during said carriage movement the short rack112 upon the carriage reaches and engages the pinion 109, the shaft 106becomes automatically coupled to the paper-carriage. At the same momentblock 110 is released by the bar 111, the looking portion of the latterterminating at the left-hand end of the short rack 112, and during theonward travel of the paper-carriage said pinion 109 and shaft 106 may berotated freely by the rack 112. At the initial rotation of the shaft 106and a half-drum 127, Fig. 3, the extreme right-hand end of thehorizontal portion of the cord 128 is raised, and thereafter the spring131, Fig. 5, exerts a rotative power upon the shaft and aids materiallyin driving the adding-wheel carriage.

As will be understood by reference to Fig. 5, a short preliminary travelof the addingwheel carriage is necessary in order to bring the firstpinion 38 thereon into engagement with the key-controlled rotator 5-This first pinion is of course associated with the millionsnumber-wheel; but the operator may by touching the usual space-key orotherwise advance both the paper-carriage and the add ing-wheel carriageuntil the number-wheel of the desired denomination is engaged by saidrotator54that is, until the pointer 13S, Fig.2, stands opposite thegraduation upon the scale 139 which corresponds to said denomination. Ifthe number to be written and added is of the millions denomination, thenthe papercarriage and adding-wheel carriage will be arrested when saidindex is opposite the extreme right-hand graduation upon said scale, orif it is of the hundred-thousand denomination when said index isopposite the second graduation, and so on.

Assuming that the number to be written is 23%.56, the carriages areadvanced until the pointer 138 stands opposite the fifth graduation fromthe righton the scale 139,

at which time the fifth pinion 88 from the left at Fig. 5that is, thepinion connected with the hundreds number-wheelis engaged to the commonrotator 5 1, while the paper-can riage stands in position to receive theimpression of a type in the lnindreds-eolumn. Having thus positionedboth the paper-carriage and the adding-wheel. carriage, the figureshift-key 171 is pushed rearwardly, and the platen is hence depressed,and while the platen is in this position the type-key 2, Fig. 2, isdepressed, thus swinging up its type-bar to impress the type 2 upon thepaper, and also affecting the carriage-feed mechanism, as abovedescribed, while by the linlc 92 the rear end of the second lever 93,counting from the right at Fig. 5, is elevated, thereby depressing theforward end thereof, said lever turning upon the fulcrum-rod 71. The

forward tip end of said lever bears down upon the cross-bar 83, Figs. 3,5, 11, and 19, and presses down both said rod 83 and the side arms 82,the latter swinging upon the rod 71'. At the same time the squarerackframe, consisting of the opposite racks 77 and the cross-bars 78,descends by gravity, the laterally-projecting pins 85 upon said racksresting upon the upper edges of the said descending arms 82, and byreason of the descent of said rack-frame the normallydisengaged racksare enabled to engage or mesh with the pinions 70, which prevent furtherdownward movement of the racks as well as of the plate 80. These pinionsare fixed upon tne same shaft 51 that carries the addingwheel rotator51-. In their downward movement the arms 82 bear down the pins 81, Figs.9 and 19, and the side arms '72, which also swing upon said fulcrum-rod7 1-, and during the latter portion of the descent of the lever 93 thecrossbar 71, which is carried by the arms 72 and normally engages bothof the pinions 70, is withdrawn from the latter. Simultaneously the lug0-1- upon the lever 93 is projected downwardly through the oblique slot95 and slightly below the bottom surface of the hinged plate 80, uponwhich, as hereinbefore described, said square raclnframe may slide.Hence it will be seen that the pinions are released for a rotativemovement, so as to slide the racks '77 forwardly along the plate 80,while simultaneously the lug fit is placed in position to contact withthe bar 78, and hence arrest the racl :frame. The arrest is effected inthis instance when the ratchet-wheels and the actuator 51 have advancedtwo points, according to the position of the particular lug 91- which isassociated with the type-key 2, said lug being so close to the normalposition of the stop-bar 78 as to arrest the latter as soon at it hasmoved two points. This will be understood by reference to Figs. 11 and19, at which figures, however, the racks are illustrated as having beenarrested by the lug 91-, associated with the 9 key. It will beunderstood that the rotary movement just referred to of the shaft 51 andthe pinions and 54, fixed thereon, is-produced by the spring 68, actingthrough the cord 66, pulley 64, cord 62, fusee 55, and backing-ratchet60. It may also be remarked, parenthetically, that the cord 96 issimultaneously wound to a slight extent upon the barrel 58, said cordunwinding from the pulley 99 in opposition to the tension of the spring103, Fig. 3, said cord having been automat ically wound upon said pulleyby said spring during the movement of the paper-carriage from right toleft or in letter-feeding'direction. By means of the pinion 38 therotator 54 is enabled to effect a rotation.of the fifth number-wheelfrom the right at Fig. 5 for a distance of two points, so that thefigure 2 appears thereon through the sight-opening 132 at Fig. 1. Duringthis movement of the number-wheel the detent 1 1, Fig. 3, bobs over theteeth of the pinion 28 and operates accurately to position not only saidpinion and number-wheel after the actuation thereof, but also the pinion38, so that the addingwheel carriage may travel freely and withoutdanger of collision between a tooth of the pinion 3S and a tooth of thecommon rotator 54. The figure 2 having thus been iinpressed in thehundreds-column upon the paper and the hundreds number-wheel having beenadvanced two points, the finger-key 2 is released and returns to normalposition under the influence of spring 24:, thus permitting the returnof the type-bar in the de scribed manner and also enabling the stoplever93 to resume its normal position. As the forward end of the latter risesthe spring 76, Figs. 3, 11, and 19, lifts the detent bar or dog 71 intoengagement with the escapementwheel 70, and at the same time, by meansof the detent-arms 72 and the pins 84: thereon, the frame, consisting ofarms 82 and bar 83, is lifted, and the pins 85 lift the racks 77 out ofmesh with the pinions 70, said racks swinging up with the plate 80,which is hinged upon the rod 7-;t. The rengagement of the detent-bar 71with the power-driven wheels 70 prevents rotation of the latter when theracks 77 are withdrawn therefrom, and upon said racks becoming clear ofthe wheels the rack-frame is drawn rearwardly to normal position againstthe stops 86 by means of the cord 88 and the spring 87. As alreadyexplained, during the return of the key-lever 22 to normal position theuniversal bar 21 descends, the rack 17 rises, and the paper-carriage ispermitted to feed a letter-space. During this movement of thepaper-carriage the rack 112 thereon rotates the pinion 109, and by meansof the shaft 106 and large gear 105, Fig. 3, which is in engagement withthe rack 104 upon the adding-wheel carriage, the latter is given acorresponding endwise movement, said movement being greater than that ofthe papercarriage owing to the difference in the diameters of the gears109 and 105. This movement of the adding-Wheel carriage is of courseassisted by the spring 131, and by said movoment the fifth-wheel 38 fromthe left, at Fig. 5, is moved out of engagement and the next pinion 38is moved into engagement with the rotator 54:, thereby connecting thetens number-wheel to the figure-kcys at the keyboard. Having thus bothprinted and added the the finger-key for 3 is depressed, thus impressingthe type 3 upon the paper, and also through the third lever 93 from theright at Fig. 5, causing the operation of the escapement-pinions '70,the rotator 5st, and the pinion 38 engaged therewith, so as to rotatethe tens-wheel three points and cause the number 3 to appear thereonthrough the sightopening 132 at Fig. 1. After releasing said key the key4: is depressed so as to print a in the units-column and turn theunitswheel four points. Then the period-key is depressed, thus feedingboth the paper-carriage and the adding-wheel carriage without causing arotation of any number-wheel by reason of the space that exists betweenthe units and tenths wheels, and in which space the rotator 54E islocated after the units-figure has been written and while the period-keyis operated. Then the type-keys for 5 and 6, respectively, are operatedwith corresponding results. It will be understood, however, that if arack such as illustrated at Fig. 1.7 is employed the period-key need notbe manipulated between the units and tenths columns, since thepaper-carriage will automatically skip a space at this time, and theadding-wheel carriage will accordingly move far enough to engage thetenths-pinion 38 with the rotator 54:. The platen 15 is now rotated, soas to advance the paper a linespace, and the carriage is moved back tobegin a new line. During this reverse movement of the carriage the rack112 rotates the pinion 109 reversely, and hence by means of the shaft106 and gear 105 the adding-wheel carriage is returned to its originalposition, as illustrated at Fig. 5. At this moment the rack 112 leavesthe pinion 109, thereby uncoupling the carriages, while the lockingportion of the bar 111 engages the block upon the pinion-shaft 106, andthereby prevents further rotation of said shaft, and hence furthermovement of the adding-wheel carriage. It will also be understood thatduring the reverse rotation of the shaft 106 the cord 128 is wound uponthe half-drum 127, thereby resetting the spring 131, the cord 128 beingfinally restored to its original position and extending substantiallythrough the axis of the drum 127, so as not to have any rotative effectupon the latter, thereby avoiding undue friction between thelooking-block 110 and the bar 111. It will be understood that at eachrotation of the fusee 55 by the spring 68 during the adding operation alength of the cord 96 has been wound upon the barrel 58, a considerableportion of said cord finally becoming Wound about the barrel, said cordpaying off from the sleeve 99. During the initial portion of the saidreturn movement ICC IIO

of the paper-carriage the remainder of the cord is unwound from thesheave 99 (which is mounted upon the carriage) in opposition to thetension of the spring 103, since the ten sion of the latter is notsufficient to rotate the barrel 58 in opposition to the pull of thespring 68 acting through the cord 62. During the final portion of thereturn travel of the paper-carriage the unwound cord 96 is dragged alongby the sheave, thereby forcibly rotating the barrel 58 and fusee 55, soas to wind the cord 62 upon the latter, and hence reset the spring 68.During this movement of the fusee the pawl 60 slips over the teeth ofthe ratchet 59, Figs. 5 and 18, while the shaft 51 and rotator 54 remainmotionless, and hence it will be seen that said rotator cannot at anytime be accidentally operated to rotate the adding-wheels backward, evenif the return movement of the carriage should be begun while saidrotator is engaged to one of the pinions 38.

The operation of writing words at the lefthand portion of the page andof writing and adding numbers at the right-hand portion thereof mayberepeated indefinitely, the adding-wheels being rotated according to theValues of the figure-keys operated. At each revolution of a pinion 38the pawl 39 thereon, Figs. 5 and 13, comes once into mesh with thepinion 29 upon the right-hand face of the adding-wheel of nexthigherdenomination and ro tates said pinion 29 and its addingwheel one point,thereby carryingten. If it should happen at any time that the pawl 39 isin such engagement at the moment when the numberwheel of higherdenomination is being independently actuated by the rotator 5 1-, saidpawl will yield and accommodate the movement of the number-wheel ofhigher denomination, so that the movement of the latter may not betransmitted through said pawl to the wheel of lower denomination,whichwould be the case if said pawl were rigidly attached to its pinion 38,thereby causing an error in the adding operation. The spring 42 restoresthe pawl to normal position after the yielding movement thereof, so thatthe tens-carrying operation may proceed as before.

It will be observed that I have combined a series of letter and figuretypes, keys therefor, a carriage connected for letter -space movement toall of the keys, a series of power-rotated adding-wheels, means forconnecting each adding-wheel to any of the figure-keys, and means forenabling the connected key to limit the are through which theadding-wheel is power-rotated. Said connecting means are normally calledinto action at a predetermined point in the traverse of thepaper-carriage and are disconnectible from the paper-carriage by thelever 1%. At said predetermined point the adding-wheel carriage-drivingspring 131, which is normally on a center, and hence inoperative, isautomatically brought into active operation. The

gearing connected to said spring is eontinnously connected with theadding-wheel carriage and discontinuonsly connected with thepaper-carriage. The independent operating means 38 for the number-wheelsare distances apart greater than the step-by-step feeding movements ofthe paper-carriage, this being due to the motion-multiplying mechanismwhich connects the paper-carriage to the adding-wheel carriage. Theadding-wheel carriage moves at a greater rate of speed than thetype-writer carriage, the motion of the former being, however, governedby the motion of the latter. The adding-wheel carriage moves in adirection of the axis of the driver 5et. It will also be observed that avariable throw-escapement mechanism, including the racks 77, pinions orescapement-wheels 70, and detenls 71, is common to and controllable byall the lignre-lreys and controls the rotatory movements of the driver5-l, the latter being rotated progressively in one direction by thespring (58. The escapementwheels 70 are power-driven, the movableholding-dog 71 coacts therewith, and the endwisemovable racks orratchet-bars 77, which are also movable transversely of their lengthinto and out of mesh with said wheels, are constructed to cooperate withthe holding-dog to permitthe escape movement of the wheels. Therack-carrier S0 is pivoted upon the fixed bar 7-l independently of thepivotal mounting of the holding-dog7l. The reciprocatory feed-racks orratchet-bars 77 are movable transversely into and out of mesh with theescapement wheels 70, said racks being pressed in one direction of theirreciprocationthat is, rearwardly-by the spring 87, which normallyholdsthe rectangular rackframe against stops 86 on the plate 80. The racksmove endwise to and fro upon the carrier 80 and are arrested byindependentlymovable stop-bars 93 at different distances from theirinitialpositions, said stops or stoplevers 93 being each adapted to movethe holding-dog 71, so as to release the escapemerit-wheels 70. The bars93 have stop-lugs 94: and are operated by connections which extend tothe type mechanism. The stoplugs 9% are arranged in a line which extendsacross and obliquely to the direction of the to-and-fro motion of therectangular rackframe. The plate 80 and the rack-bar frame thereon areconnected by the pins to the bail-arms 89, so to be moved in onedirection therebynamely, in an upward directionduring the upwardmovement of the finger-key. The arms S2,taken together with thecross-bar 83, form a pivoted bail for moving the arms 72, which carrysaid holdingdog 71. It will be observed, further, that independentmeans, as 38, are provided for rotating each adding-wheel, said meansbeing operated one at a time by the rotatory driver 51, which is drivenby the spring 68. Means are connected with the type writing mechanismfor resetting the spring 68, said means IIO including the barrel 58 andthe cord 96,1hereby restoring the power for operating theadding-mechanism driver 54.. In other words, the paper-carriage is ato-and-fro movablespring setter connected with the spring 68, whichactnates the number -wheel d riverwheel 54, so as to reset said springfrom time to time.

By means of either the slide 13 which looks the adding-wheel driveragainst rotation, or the lever 12t,which moves the coupling-pinion 109to'a position of disuse, the addingwheels may be rendered inoperative atwill.

While I have particularly described the illustrated form of myinventiomlam not to be understood as limiting myself to such particularform, inasmuch as my invention is capable of being embodied in otherforms and arrangements without departing from the spirit thereof.

WVhat I claim as new, and desire to secure by Letters Patent, is

1. The combination of type mechanism, a carriage,an adding orregistering mechanism, a second carriage on which the adding-wheels aremounted, and means for automatically connecting said carriages togetherat a predetermined point in the forward motion of the type-writercarriage, means independent of the moving means of the first-mentionedcarriage for moving the carriage on which the adding-wheels are mounted;substantially as described.

2. The combination of type mechanism, a carriage,an adding mechanism, asecond carriage on which part of said adding mechanism is mounted, andindependent spring-operated driving mechanism for said second carriageand automatically thrown or brought into operation when the type-writercarriage reaches a predetermined point in its forward traverse;substantially as described.

The combination'of type mechanism, a carriage, an adding mechanism, onepart of which has motion to and fro relatively to the other part,and anindependent driving mechanism for moving said movable part and normallyout of action until the said carriage reaches a predetermined pointinits forward motion; substantially as described.

4. The combination of type mechanism, a carriage, an adding mechanism, asecond carriage on which part of said adding mechanism is mounted,mechanism for connecting said carriages together when the type-writercarriage reaches a predetermined point in its forward traverse, and anindependent spring for moving said second carriage but normallyinactivebefore the type-writer carriage reaches said point and thrown intooperation when said carriages are coupled to gether, substantially asdescribed.

5. The combination of type mechanism, a carriage, an adding mechanism, asecond carriage on which part of said adding mechanism is mounted,gearing continuously connected with one of said carriages anddiscontinuously connected with the other thereof, and a drive-springconnected with said gearing and on a center until the gearing isconnected with both carriages, substantially as described.

6. The combination of type mechanism, a carriage, an adding mechanism, asecond carriage on which part of said adding mechanism is mounted, anindependent driving mechanism for said second carriage, and means forautomatically connecting said driving mechanism with the type-writercarriage when the latter reaches a predetermined point in its forwardtraverse; substantially as described.

7. The combination of type mechanism, acarriage, an adding mechanism, asecond carriage on which part of said adding mechanism is mounted, anindependent driving mechanism for said second carriage and normallyinactive during a part of the forward traverse of the type-writercarriage, and means for automatically throwing or bringing said drivingmechanism into action when the typewriter carriage reaches apredetermined point in said forward traverse; substantially asdescribed.

8. The combination of type mechanism, a carriage, an adding mechanism, asecond carriage on which the adding-wheels are mounted, an independentdriving mechanism for said second-named carriage, and means forautomatically connecting said driving mechanism with said type-writercarriage at a predetermined point in the forward traverse of the latter;substantially as described.

9. The combination of type mechanism, a carriage, an adding orregistering mechanism including a series of adding-wheels, asecondcarriage on which the adding wheels aremounted,normallyinactiveindependent driving mechanism for saidadding-mechanism carriage; and means for automatically throwing saiddriving mechanism into action when the type-writer carriage reaches agiven point in its forward traverse; substantially as described.

lO. The combination of type mechanism, a carriage, an adding mechanism,a second carriage on which part of the adding mechanism is mounted, arack on the last-named carriage, a pinion meshing with said rack, aspring for rotatin said pinion in one direction, and means for renderingsaid spring inoperative dnring a part and operative during the remainderof the forward traverse of the type-writer carriage; substantially asdescribed.

11. The combination of type mechanism, a carriage, an adding orregistering mechanism, a second carriage supporting the addingwheels, arack on said second carriage, a journaled pinion meshing with said rack,and mechanism for automatically connecting said pinion with thetype-writer carriage at a predetermined point in the forward motionthereof 5 substantially as described.

12. The combination of type mechanism, a

